/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.iotdb.tsfile.read.common;

import org.apache.iotdb.tsfile.file.metadata.enums.TSDataType;

import java.util.ArrayList;
import java.util.List;

public class RowRecord {

    private long timestamp;
    private final List<Field> fields;
    /**
     * if any column is null, this field should be set to true; otherwise false
     */
    private boolean hasNullField = false;

    /**
     * if any column is not null, this field should be set to false; otherwise true
     */
    private boolean allNull = true;

    public RowRecord(long timestamp) {
        this.timestamp = timestamp;
        this.fields = new ArrayList<>();
    }

    public RowRecord(long timestamp, int nums) {
        this.timestamp = timestamp;
        this.fields = new ArrayList<>(nums);
        for (int i = 0; i < nums; i++) {
            this.fields.add(null);
        }
    }

    public RowRecord(long timestamp, List<Field> fields) {
        this.timestamp = timestamp;
        this.fields = fields;
        for (Field field : fields) {
            if (field == null || field.getDataType() == null) {
                hasNullField = true;
            } else {
                allNull = false;
            }
        }
    }

    public void addField(Field f) {
        this.fields.add(f);
        if (f == null || f.getDataType() == null) {
            hasNullField = true;
        } else {
            allNull = false;
        }
    }

    public void setField(int index, Field f) {
        this.fields.set(index, f);
        if (f == null || f.getDataType() == null) {
            hasNullField = true;
        } else {
            allNull = false;
        }
    }

    public void addField(Object value, TSDataType dataType) {
        this.fields.add(Field.getField(value, dataType));
        if (value == null || dataType == null) {
            hasNullField = true;
        } else {
            allNull = false;
        }
    }

    public void setField(int index, Object value, TSDataType dataType) {
        this.fields.set(index, Field.getField(value, dataType));
        if (value == null || dataType == null) {
            hasNullField = true;
        } else {
            allNull = false;
        }
    }

    @Override
    public String toString() {
        StringBuilder sb = new StringBuilder();
        sb.append(timestamp);
        for (Field f : fields) {
            sb.append("\t");
            sb.append(f);
        }
        return sb.toString();
    }

    public void setTimestamp(long timestamp) {
        this.timestamp = timestamp;
    }

    public long getTimestamp() {
        return timestamp;
    }

    public List<Field> getFields() {
        return fields;
    }

    public boolean hasNullField() {
        return hasNullField;
    }

    public boolean isAllNull() {
        return allNull;
    }

    public void resetNullFlag() {
        hasNullField = false;
        allNull = true;
    }
}
